[FOP-2728] Persian (Farsi) output problem with FOP

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.1
• Component/s: renderer/pdf
• Labels: drupal
• Environment: Ubuntu 16.04 with xmlto 0.0.28
• External issue URL: https://www.drupal.org/node/2887064
• External issue ID: 2887064
• Assignee: Unassigned
• Reporter: Navid Emami
• Created: 16/Jul/17 07:53
• Updated: 18/Jul/17 13:45
• Resolved: 17/Jul/17 19:29

Description

We are having trouble making Persian (Farsi) language output with FOP.

We are using the xmlto script with the --with-fop option to convert a DocBook file to PDF using FOP, which uses XSLT to first make a FO file, and then FOP to convert to PDF. We used the --noclean option to capture the intermediate FO XML file.

We have verified that the Persian (Farsi) characters are readable in the DocBook and FO files. However, when we generate the PDF, the output is not readable. There are both joined and separated letters in Persian (Farsi) language but the output in PDF format has just separated ones.

Note that there are some font issues in the PDF output as well – missing glyphs – those show as # characters, and are in the chapter/section headings. However, the main body of the text has no # characters, and it still has this problem.

Attachments:

• sample-output.zip contains small.docbook, small.fo, small.epub and small.pdf. The final output of PDF should be similar to EPUB.
• sample-output-full.zip contains guide.epub and guide.pdf which are the complete documents but with wrong rendering of characters in PDF.

Issue Links

• is related to: FOP-2093 Explicit language may prevent gsub/gpos application